baber/WOPTO huggingface dataset:
Patent GB-1209718-A (GB)
Title: Polymeric compositions
IPC: C08L81/06
Filed: 1969-05-09
Abstract: 1,209,718. Polymer blends. SUMITOMO CHEMICAL CO. Ltd. 9 May, 1969 [10 May, 1968; 30 Nov., 1968], No. 23790/69. Headings C3G, C3P and C3R. A thermoplastic resin blend comprises a vinyl chloride polymer and a polysulphone. Preferred mixtures contain 10-99% of PVC and 90-1% of polysulphone and are obtained by melt mixing on rollers, in a mixer or in an extruder or by mixing solutions of the two resins e.g. in tetrahydrofuran and co-precipitating, e.g. with methanol. When mixing the solids a low molecular weight liquid is preferably added to prevent discoloration and removed after mixing, preferred is ethylene dichloride. In one embodiment the vinyl chloride polymer is a graft of vinyl chloride on ethylenevinyl acetate copolymer. The preferred polysulphone is obtained from the disodium salt of bis-phenol A and bis-(4-chlorophenyl) sulphone. Optional ingredients used in the examples are tribasic lead sulphate, lead stearate, calcium stearate, a mercapto tin stabilizer or octadecyl stearate.
Patent GB-1513647-A (GB)
Title: Analytical device for transmission x-ray tomography
IPC: G01N23/04
Filed: 1976-06-09
Abstract: 1513647 lonisation chambers COMMISSARIAT A L'ENERGIE ATOMIQUE 9 June 1976 [19 June 1975] 23898/76 Heading H1D A tomographic scanner having a source of X-rays 4 providing a divergent planar beam of radiation used to examine a slice of an object uses as the detector an arcuate array of ionisation chambers which are filled with either a gas, such as xenon at about ten atmospheres, or a solid such as cadmium tellunide or mercury iodide. The chambers are sequentially interrogated by an integrator to derive the output signals. In Fig. 4 the ionisation chambers are constituted by spaces between anodes 34 and a common cathode 32 with an intervening screen grid 30. In Fig. 2 (not shown) the anodes are radial plates extending from an arcuate plate with intervening insulating plates carrying on each surface a separate cathode. In Fig. 3 (not shown) Fig. 2 arrangement is modified to provide only one cathode between each pair of anodes to reduce intercathode capacitance.
Patent GB-1513480-A (GB)
Title: Catalysts for the polymerization of olefins
IPC: C08F4/64
Filed: 1976-06-09
Abstract: 1513480 Organoaluminium complex MONTEDISON SpA 9 June 1976 [12 June 1975 25 July 1975] 23910/76 Heading C2J [Also in Division C3] The complex MgCl 2 2AlEtCl 2  is prepared by heating anhydrous MgCl 2  with AlEtCl 2 , isolating and washing the precipitate formed by the addition of heptane and drying to form a white solid of MPt165 C.
Patent GB-1167290-A (GB)
Title: Stabilization of Polymers of Cyclic Esters of Hydroxycarboxylic Acids
Inventor: LEU KURT WERNER
IPC: C08K5/524
Filed: 1967-05-23
Abstract: 1,167,290. Stabilization of cyclic ester polymers. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 23 May, 1967 [25 May, 1966], No. 23913/68. Divided out of 1,161,932. Heading C3R. Polymers of cyclic esters of hydroxycarboxylic acids are stabilized with (i) an ester of phosphorous acid and a polyhydric alcohol and/or (ii) an ester or ester-salt of a phosphoric acid in which at least two of the oxygen atoms have been replaced by sulphur atoms. Specified for (i) are esters of phosphorous acid and ethylene glycol, butanediol, glycerol, trimethylol propane and pentaerythritol and similarly esters in which up to <SP>1</SP>/ 3  of the hydroxyl groups of the phosphorous acid are esterified by monohydric alcohols or phenols. Specified for (ii) are O,O- diethyl - S - ethylmercaptoethyldithiophosphate and its O,O.dimethyl analogue, 0,0-diethyl-S- phenylmercaptomethyldithiophosphate, trialkyl (e.g. trilauryl) and triaryl trithiophosphates and O,O-diethyl zinc dithiophosphate. As additional stabilizers there may be used, phenylbeta-naphthylamine, various sterically hindered phenols, tetraalkylthiuram disulphides, dilauryl-beta-thiodipropionate and tri-(nonylphenyl)- phosphite. The stabilizers may be added before, during or after the polymerization of the cyclic ester. Many cyclic esters are referred to but the preferred ones are alpha, alpha-dialkyl-beta. propiolactone (especially pivalolactone).
Patent GB-685394-A (GB)
Title: Improvements relating to regenerative coke ovens
IPC: C10B21/16
Filed: 1950-10-02
Abstract: 685,394. Coke ovens. DIDIER-KOGAGHINSELMANN KOKSOFENBAU UND GASVERWERTUNG AKT.-GES. Oct. 2, 1950 [Oct. 8, 1948], No. 24050/50. Class 51 (ii). In a regenerative coke oven, passage of gases between the regenerators and heating flues or passage of gases between the sole flues and the regenerators is controlled by a partition 2 formed with a pair of nozzles 2a and 2b converging respectively in opposite directions associated with a valve member 1 having ports 1a and 1b forming continuation of the aforementioned nozzles, the nozzles and ports having different distances between their centres so that by moving the valve member 1 the area of the orifice and the nozzle form may be varied. In a modification, Fig. 4 (not shown), the valve member 1 has a single oblong port common to both openings in the partition. The invention is shown applied to the burners in a heating flue Fig. 5 in which lean gas and air are supplied through passages 5 and 6 respectively and a rich gas supply pipe 10 is disposed in a partition separating two sets of nozzles. On reversal both passages 5 and 6 conduct away the waste gases. The device may also be disposed between a sole flue 7, Fig. 9, supplying either lean gas or air and the regenerator 8 disposed thereabove, a closeable aperture 9 permitting adjustment of the valve members during operation of the oven. In a final modification Figs. 12-15 (not shown) two separate valve members are provided instead of a single valve member common to both nozzles.
Patent GB-641485-A (GB)
Title: Improvements relating to revolving doors
IPC: E06B3/90
Filed: 1947-08-30
Abstract: 641,485. Revolving doors. ELLIOTT, C. A., and ELLIOTT & SONS (READING), Ltd., S. Aug. 30, 1947, No. 24052. [Class 20 (iii)] The leaves 1 of a revolving door are swingably supported to a centre post 5 by means of intermediate posts 3 and pairs of double hinges 4 and 2 and are held in their normal positions by resilient ties, comprising a tension spring 6 and a chain 9, the arrangement being such that the leaves collapse under abnormal pressure, stop members 15 being provided to limit the angle of collapse and to transfer the axis of hingeing of the leaves from the hinges 4 to the hinges 2. The hinges 4 may be slightly narrower across than the hinges 2 to ensure that the initial hingeing is on the hinges 4.
Patent GB-770517-A (GB)
Title: Improvements in or relating to apparatus for the manufacture of parts from strip material
IPC: B21D28/36
Filed: 1953-09-01
Abstract: 770,517. Making electronic valve screens; shearing; angular bending. VEB FUNKWERK ERFURT. Sept. 1, 1953, No. 24170/53. Classes 83 (2) and 83 (4). Apparatus for producing electronic valve screens or other metal articles from strip metal includes means to feed the strip intermittently through the apparatus, tools, rotating on axes parallel to the direction of the strip feed, to notch the edges of the strip and shear plungers, a severing blade, and bending plungers to cut and bend the notched strip. A metal strip 20, Fig. 5, from which valve screens 25, Fig. 6, are to be produced, is fed intermittently through the machine by a feed carriage 21 reciprocated by a cam 23 which engages one arm of a bellcrank 22, pivoted on the carriage 21, the other arm of which serves to grip the strip on the carriage during the forward movement thereof. At a first station A notches are cut in the edge of the strip by cutters 11, 12, Fig. 2, secured on shafts 8, 9 rotating on axes parallel to the direction of strip feed, co-operating with a plate 3 over which the strip is fed. At the next but one station B, two lugs 26 are cut in the strip by shearing plungers 28, 29, and are bent over to the required shape. The shearing plungers 28, 29 are carried on a member 27 reciprocated in a guide 13 by a cam 15, and co-operate with a spring-urged plate 4 on which the strip is supported. At this time the strip is severed transversely between the station B and a succeeding station C by a blade 30 on the member 27. The member 13 is loosely carried on the shaft 9 to pivot thereabout and is pressed on to the strip by a cam 14, during the operation of the tools, to act as a hold-down. At the station C the edges of the severed part of the strip are bent up by plungers 31, 32 slidably mounted in the member 13 and actuated by a cam 16 and cooperating with a spring-urged strip-supporting plate 5, the plungers 31, 32 being operated slightly after the severing blade 30.
Patent GB-269062-A (GB)
Title: Improvements relating to fire alarms
IPC: G01K5/16
Filed: 1926-10-01
Abstract: 269,062. Peedle, R., and Lickfold, A. P. C. Oct. 1, 1926. Alarms operated by expansion of liquids. -In a fire-alarm of the kind wherein a column of mercury expands under heat and bridges a pair of electrical contacts, the mercury tube b is carried by a cupshaped member g having a screw-thread k engaging a thread l on a bracket m which may be fixed to a ceiling and carries the fixed contacts d. By rotating the member g the temperature at which the alarm operates is varied. The member g may carry a degree scale. The tube b is enlarged at its upper end and held in the member g by a screw i.
Patent GB-299801-A (GB)
Title: Improvements in and relating to a harmonica or mouth-organ
IPC: G10D7/12
Filed: 1928-08-27
Abstract: 299,801. Hirose, K. Nov. 1, 1927, [Convention date]. No Patent granted (Sealing fee not paid). Mouth organs. - A double mouth organ, the units 1, 2 of vhich each comprise " blow " and " draw " reeds, has a slidevalve 13, actuated by external levers, by which either unit may be put into communication with the mouth-piece 11. Both units produce chords, or one ma.y be constructed for single notes.
Patent GB-388446-A (GB)
Title: Improvements in or relating to brakes for road vehicles
IPC: F16D65/22
Filed: 1931-09-02
Abstract: 388,446. Fluid-pressure brakes. PAYNE, M., 50, Hook Road, Surbiton, Surrey, and CLAYTON DEWANDRE CO., Ltd., Titanic Works, Lincoln. Sept. 2, 1931, No. 24660. [Class 103 (i).] In a brake for a vehicle wheel having a swivelling movement for steering, a vacuum or pressurebrake cylinder 5 mounted on the swivelling wheel axle or a part moving therewith acts on the brake shoes 2a by means of hydraulic transmission. The shoes 2a are operated by two hydraulically operated pistons 3 in a cylinder 1 arranged between the ends of the shoes. The cylinder 1 is formed in one piece with a cylinder 2 containing the hydraulic driving piston 4a directly attached to the piston 4 of the vacuum cylinder 5. The cylinders 1, 2 are attached to the brake backing plate 7. The vacuum cylinder 5 may be mounted on the backing plate. The cylinders 1, 2 may be independently mounted and connected by a conduit. The cylinder 2 may communicate with a replenishing liquid reservoir and means may be provided for preventing air entering the system. In order that the piston 4 shall have a mechanical advantage the piston 4a is smaller than the pistons 3.
Patent GB-1116406-A (GB)
Title: Method for detecting fractures in a formation penetrated by a borehole
IPC: G01V1/44
Filed: 1965-06-10
Abstract: 1,116,406. Seismic prospecting. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 10 June, 1965 [12 June, 1964], No. 24664/65. Heading H4D. In an arrangement for detecting fractures, e.g. 11, Fig. 1, in a bore-hole a conventional logging tool comprising at least a single electroacoustic transmitter 12 and receiver 13 is moved to produce an increment of depth of about one inch (or less) between successive ones of a series of pulses produced by transmitter 12 each pulse resulting in wave-trains travelling over paths 14, 15, 17 and 20, 22, 23 (due to energizing the edge 16 as a secondary source) so that as the tool moves the relative change in the lengths of the two paths results in the signal output of receiver 13 having a distinctive amplitude-time characteristic indicative of the presence of the fracture. One embodiment for carrying out the invention consists in utilizing the received signal for vertical deflection of a cathode-ray tube 35 (Fig. 4), the horizontal deflection (time-base) of which is triggered by each transmitted pulse and the display on which is photographed by a camera 33 employing the output of a selsyn coupled to a measuring sheave 31 for controlling the film advance. This results in a record such as that of Fig. 3 (not shown) enabling the presence of a fracture to be determined by visual inspection. In another embodiment the receiver output is fed via amplifier 40 (Fig. 5), both directly and via a delay circuit 44 (delay = interval between transmitted pulses) and adjustable amplifier 46 to a difference amplifier 45A so that a significant change (from Fig. 6 to Fig. 7, neither shown) in the output from the latter occurs only when the two input signals differ as the result of the presence of a fracture. The output signal is displayed on a cathode-ray tube 47 against a time base triggered by the transmitter pulse and recorded by camera 58. Additionally, the output of 45 is fed to a further difference amplifier 48 having as second input a reference voltage 49 equal to the output of 45A in the absence of a fracture so that significant output from 48 occurs when a fracture is encountered. Such output is utilized to trip a bi-stable circuit 45 from its first state, set by the transmitter pulse in the output of amplifier 40 (on line 41), to its second state, the output of circuit 45 during the first state opening a gate 51 which passes pulses from a fixed frequency oscillator 53 to a digital counter and thence to a digital to analogue converter 58 producing an output signal which is recorded on a chart recorder 56 driven by a signal from the measuring sheave 31. When correctly adjusted the only signals recorded will be the characteristic " W " shape 57 which is indicative of the presence of a fracture and thus the presence of such and its location may be determined. To ensure the return of the bi-stable circuit 45 to its initial condition a reset pulse is supplied from a trigger circuit 52 fed from the transmitter.
Patent GB-363622-A (GB)
Title: Improvements in or relating to the treatment of metallic oxy-compounds
IPC: C01G1/06
Filed: 1930-08-18
Abstract: Metallic oxy compounds are chlorinated by a gaseous mixture of chlorine and sulphur dichloride containing enough dichloride to reduce the oxycompound and enough chlorine to chlorinate it; alternatively there may be enough dichloride present to form a double chloride with the metal chloride.  The gaseous reagent may be prepared by passing chlorine through sulphur chlorides, especially the dichloride, at 50 DEG  C.  By using selected temperatures metals present may be selectively reduced, chlorinated, and volatilized.  In treating a mixture of tantalum and niobium oxides, the former is chlorinated and volatilized at 200 DEG  C., the latter being unaffected.  The two metals are however distilled off together from tantalite and columbite ores. Treatment of a mixture of tantalum oxide and stannic oxide results in chlorination and volatilization of the former at 300 DEG  C. and of the latter at 550 DEG  C.  Aluminium and beryllium may be volatilized together from silicate ores thereof, and aluminium and titanium from bauxite probably as double chlorides. Tungsten gives an oxychloride.  The double chlorides formed are usually soluble solids, but the tin double chloride decomposes in cold water and is very volatile.
Patent GB-1458645-A (GB)
Title: System for verifying the user of a card
IPC: G11B15/18
Filed: 1975-06-10
Abstract: 1458645 Reel-to-reel tape recorders; end-oftape indicators COMPUR WERK GmbH & CO 10 June 1975 [20 June 1974] 24729/75 Heading G5R The increased current consumption of a tapedrive motor 30 when the tape comes to a standstill on reaching its end position causes a voltage drop across a resistor 40, which lights an indicator lamp 46, e.g. as shown by rendering a transistor 44 conductive. The lamp 46 may be mounted alongside the microphone/loudspeaker perforations (50) in a miniature portable cassette recorder, Fig. 1 (not shown).
Patent GB-641409-A (GB)
Title: Improvements in inner tubes
IPC: B60C5/04
Filed: 1948-09-22
Abstract: 641,409. Wheel tyre air tubes. UNITED STATES RUBBER CO. Sept. 22, 1948, No. 24759. Convention date, Dec. 31, 1947. [Class 144 (ii)] A pneumatic tyre inner tube 1 of rubber composition has a pair of rubber composition circumferential flaps 3, 4 vulcanized to that region of its outer wall which, when the tyre 7 is assembled on a wheel, lies within the wheel rim 8, said flaps 3, 4 being interconnected by an integral strip 5 of rubber composition forming a layer covering that part of the tube which lies opposite the central portion of the rim. The central strip 5 is more extensible than the flaps 3, 4 and to this end is made of thinner rubber, or of a more extensible composition, and may have circular or slotted perforations 6 formed therein. The flaps 3, 4 and the strip 5 together extend over 13-27 per cent of the crosssoctional perimeter of the tube. When the tyre 7 and tube 1 are assembled and inflated on a wheel (Fig. 2) the flaps 3, 4 lie adjacent the junction between the tyre beads and the rim 8, and the tube expands into the well of the rim. The strip 5, being more extensible than the flaps 3, 4, takes the whole of the stretch involved in such expansion, the flaps 3, 4 remaining unstressed and serving to protect the wall of the tube 1 from injurious chafing arising from movement of the tyre bead on the rim under working conditions.
Patent GB-544637-A (GB)
Title: Spark plugs
IPC: H01T13/32
Filed: 1939-08-29
Abstract: 544,637. Sparking plugs. SMITH, C. Aug. 29, 1939, No. 24826. [Class 7 (iv)]  The part 23 of the central electrode and its insulation 22 slide within the casing 7 under the influence of cylinder pressure, making periodical contact with the end 16 of the conductor 15 which is secured to insulation 13. Segmental sparking terminals 28 are attached by supports 29 to the end of the casing ; the relative position of the terminal 27 varies angularly as well as axially. Aluminium or chrome alloy is used for the casing.
Patent GB-1421955-A (GB)
Title: Beer production
IPC: C12N11/00
Filed: 1973-05-24
Abstract: 1421955 Insolubilized enzymes ABM INDUSTRIAL PRODUCTS Ltd 13 May 1974 [24 May 1973] 24896/73 Heading C3H [Also in Division C6] Conversion of residual carbohydrates (dextrins) in wort or beer to glucose is achieved using amyloglucosidase in insolubilized form, e.g. in a static or fluidized bed. The insolubilized enzyme may also include glucose oxidase. Insolubilization may be achieved by entraining or encapsulating the enzyme within an insoluble supporting material, by adsorbing it on to a solid surface, or chemically by bonding free amyloglucosidase to silica or glass by means of titanium salts, e.g. the trichloride, or salts of zirconium, vanadium, iron or tin, bonding to filter aid, e.g. kieselguhr by means of a diazo compound, impregnating cellulose with a dialysed enzyme solution, entraining the enzyme within cellulose acetate fibres by extending the enzyme with the cellulose acetate in the fibre production, or, preferably, by bringing the free enzyme and a gelling protein into a particulate form and reacting with a polyfunctional protein reagent. The insolubilized enzyme employed according to the examples consisted of substantially spherical particles or beads prepared by reacting free amyloglucosidase derived, e.g. from Aspergillus awamori and gelatine in particulate form with glutaraldehyde. The particles may be ground to size 60-120 BSS mesh.
Patent GB-775193-A (GB)
Title: Improvements relating to bells for cycles or the like
IPC: B62J3/00
Filed: 1954-08-27
Abstract: 775,193. Bells. VIC-TREE PRODUCTS (BIRMINGHAM), Ltd., and SNELSON, H. G. Aug. 2, 1955 [Aug. 27, 1954], No. 24911/54. Addition to 642,209. Class 13. In a cycle or like bell comprising a dome a and a spring striking arm f secured to an upright bracket as described in the parent Specification, the bracket b is formed from a strip of sheet metal bent to a U-formation and is secured by riveting to the component d of a handlebar clip. The arrangement is stated to increase the resilience of the striking arm by permitting it to flex about its region of attachment to the bracket.
Patent GB-249358-A (GB)
IPC: F16D65/10
Abstract: 249,358. O'Gorman, T. M., and McKay, W. A. May 14, 1925. Energy - absorbing elements.-A band A of rubber or other resilient or elastic material is applied to the periphery of a brake drum B to prevent the emission of a squeak or noise when the brakes are applied. The band may grip the drum by its own elasticity or it may be secured thereto by adhesive, metal clips or metal encircling devices; or it may be formed in lengths wound round the drum one or more times and held by clips or screws. The band may be grooved on its outer or inner surface.
Patent GB-626716-A (GB)
Title: Apparatus for ascertaining the mean useful length of the staple of a strand of fibres in or for spinning
IPC: G01N33/36
Filed: 1946-08-22
Abstract: 626,716. Testing strands of fibres. LITTY, P. Aug. 22, 1946, No. 25021. Convention date, March 3, 1939. (Class 120 (iii)] Apparatus for ascertaining the mean useful length of the staple of a sliver, roving or similar strand of fibres (i.e. the mean length of all fibres lying side by side in a given cross-section of the strand, measured in the longitudinal direction of the strand), is adapted for feeding and cutting off a predetermined length of the strand which is more than twice the length of the longest fibre, for gripping the cut length at the middle and for combing out the two projecting ends until all loose fibres are removed. The weight of the remaining tuft of fibres can then be compared with the total weight before combing, and the mean useful length of staple determined from the relation :- As shown, a length of fibres a is clamped between plates 31, 32, being positioned laterally by guides 39 which can be swung up for this purpose to the position shown in dotted lines. One end of the fibres is then combed by needle combs 8... 14 mountd on a sector 7 rotated by a handle 5. The sector is mounted on an eccentric bush which is itself driven through reduction gearing so as to advance, the combs towards the fibres with successive revolutions. When one end of the fibres is combed, levers 41 are raised to allow the clamping device to be rotated about 180 degrees, the other end being combed similarly. A bell is arranged to ring after a predetermined number of revolutions of the sector 7 ; the sector is retained in the position shown by engagement of a stop 20 with a pawl 22. Uniform test lengths are obtained by feeding the strand between a roller 45, mounted on the sector spindle 4, and a weighted pressure roller 46 ; pawl 22 is released by depressing, a key 24, and handle 5 is rotated until stop 20 re-engages the pawl, when a knife 49 is operated to sever the test lengths of the strand. In a modification, the combs are pivoted on arms of the sector, and their angular positions are determined by engagement of rollers with a cam groove so that the combs are always directed perpendicularly to the fibres.
Patent GB-259956-A (GB)
Title: Improvements in and relating to mops
IPC: A47L13/252
Filed: 1926-10-08
Abstract: 259,956. Collette, O. P. D. Hendrick-. Oct. 13, 1925, [Convention date]. Pivoted handles.-In a mop of the type comprising a fringed member 2 threaded on a metal strip 1 with a free end 5. this end is provided with a fork 6 for supporting the socket 9 of a handle 8. The socket may be pivotally mounted on a pin 7 carried by the fork 6, or may be rigidly secured to the fork. In the former case, pivotal movement of the handle in one direction may be limited by the provision on the fork 6 of a pin 10 adapted to contact with the end of the socket 9. Specifications 149,155 and 233,590 are referred to.